firewall packet-filter default permit all 开启包过滤
nat server protocol tcp global 220.100.61.25 21 inside 192.168.0.2 21
nat server protocol tcp global 220.100.61.25 80 inside 192.168.0.2 80
nat server protocol tcp global 220.100.61.25 443 inside 192.168.0.2 443
nat server protocol tcp global 220.100.61.25 1443 inside 192.168.0.2 1443